Pls help with this problem

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

The only way to identify an intercept is as an ordered pair. true false

W-16=-12 solve each one step equation plz